now the focus is on 19-year-old dzhokhar tsarnaev. he is a chechen immigrant, a student who has attended boston area schools as jennifer talked about, the cambridge rindge latin, very prestigious cambridge public school that ben affleck, and matt damon and patrick euwing have attended. he was there for the past few years. about 6:45 this morning authorities put a name to his face and started to piece this all together. right now you have massive police presence in 4 one central area in watertown, massachusetts, literally lined from side to side with armored vehicles. the schools in boston, the tra thans transas we just said in boston all shut down in an effort to make sure that he cannot get out. they are hoping that they have him surrounded, and that one way or another they will find him. let's go to jenna. we'll bring if a guest who my have more insight into how the search goes on for this. jenna: so many questions still remain as we continue to piece together what is actually going on with this investigation. we still don't know a